I broke up with neovim....vim is my best friend now

dot_vim/plugged/vimtex/test/test-completion-filenames/Makefile

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+.PHONY: test
+
+MYVIM ?= nvim --clean --headless
+
+INMAKE := 1
+export INMAKE
+
+test:
+	@$(MYVIM) -u test.vim

dot_vim/plugged/vimtex/test/test-completion-filenames/main.tex

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+\documentclass{article}
+\usepackage{graphicx}
+\usepackage{tikz}
+\usepackage{pdfpages}
+\usepackage{standalone}
+
+\graphicspath{{./my figures/}}
+
+\begin{document}
+
+\end{document}

dot_vim/plugged/vimtex/test/test-completion-filenames/test.vim

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+set nocompatible
+let &rtp = '../..,' . &rtp
+filetype plugin on
+
+nnoremap q :qall!<cr>
+
+silent edit main.tex
+
+if empty($INMAKE) | finish | endif
+
+let s:candidates = vimtex#test#completion('\input{', '')
+call assert_equal(len(s:candidates), 4)
+
+let s:candidates = vimtex#test#completion('\include{', '')
+call assert_equal(s:candidates[0].word, 'main')
+
+let s:candidates = vimtex#test#completion('\includeonly{', '')
+call assert_equal(len(s:candidates), 4)
+
+let s:candidates = vimtex#test#completion('\subfile{', '')
+call assert_equal(len(s:candidates), 2)
+
+let s:candidates = vimtex#test#completion('\subfile{', '')
+call assert_equal(s:candidates[1].word, 'tikz_pic.tex')
+
+let s:candidates = vimtex#test#completion('\includegraphics{', '')
+call assert_equal(len(s:candidates), 26)
+call assert_equal(s:candidates[10].word, 'figures/example1.tikz')
+call assert_equal(s:candidates[10].abbr, 'figures/example1.tikz')
+
+let s:candidates = vimtex#test#completion('\includegraphics[scale=0.5]{', '')
+call assert_equal(len(s:candidates), 26)
+
+let s:candidates = vimtex#test#completion('\includegraphics[100,100][300,300]{', '')
+call assert_equal(len(s:candidates), 26)
+
+let s:candidates = vimtex#test#completion('\includegraphics{', 'new_fig')
+call assert_equal(len(s:candidates), 9)
+call assert_equal(s:candidates[0].word, 'new_fig1.jpg')
+call assert_equal(s:candidates[0].abbr, 'my figures/new_fig1.jpg')
+
+let s:candidates = vimtex#test#completion('\includestandalone{', '')
+call assert_equal(len(s:candidates), 2)
+
+let s:candidates = vimtex#test#completion('\includepdf{', '')
+call assert_equal(s:candidates[0].word, 'figures/fig12.pdf')
+
+call vimtex#test#finished()

dot_vim/plugged/vimtex/test/test-completion-filenames/tikz_pic.tex

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+\documentclass{standalone}
+\usepackage{standalone}
+\usepackage{tikz}
+\begin{document}
+\begin{tikzpicture}
+    \draw ((0, 0) node[below left]{\large Reliability} --
+        (0: 4) node[below right]{\large Acquisition costs} --
+        (60: 4) node[above]{\large Energy consumption} -- cycle;
+\end{tikzpicture}
+\end{document}